98Camarod

iTrader: (43)

I applied the 3 bar software to it and it will turn over and fire for a second and die. It appears that the tach isn't responding correctly either. I finally got around to trying to getting it to run again and this happens. It's the same tune that I had in the 98 file. I have a 3 bar map as well.

I double then triple checked the wires and they are all still labeled for fear of something like this happening. I also had my dash out for my cage install and rewired my gauges that are in the cab.

I'm all ears.....

topgun542

iTrader: (6)

Try relinking your vats... the system will let it fire up and then die

98Camarod

iTrader: (43)

Ill give that a shot tomorrow. Ive got duty today so it will have to wait. I thought i disabled it though, either way ill double check.

hbhc

iTrader: (8)

I thought the '98 computers were only capable of 2 bar and I believe the '98 vs. '99 is completely different as far as the tables, etc. I don't believe the tunes would be interchangeable. Are you using HP Tuners? Are you using your '98 harness with the '99 computer? If so, have you confirmed that the harness was re-pinned correctly?

Not sure that I have much to add, but pretty certain the tune is not interchangeable between '98 and '99. I originally had a '98 computer and harness, but was advised to swap out to the '99 computer so that I could go with the HP Tuners 3 bar OS. After buying the newer computer, I paid a company to re-pin my '98 harness to be used with the '99 computer (they ARE different).

You might be aware of all of the above, but I don't understand your statement regarding apply the '98 3 bar to your '99 computer. If you have already had the '98 harness reworked, I might have a base tune 3 bar for your '99 computer. If you don't have the reworked harness yet, I might be able to help you out with that as well (I'm switching to Holley and selling off what I had).

Good Luck!

Scott

98Camarod

iTrader: (43)

There's a show all differences feature and the only difference now is the speedo. The 0411 has more tables than the 98, so the ones that are the same, are the same in the 0411 pcm.

98Camarod

iTrader: (43)

disabled vats and nothing. RPM is registering, 3 bar software is applied.

DopeFedZ

iTrader: (34)

Maybe recheck the connectors inside the car on the passenger side foot rest area. Did you unplug any of that stuff? I repinned my 98 harness and experienced a few issues and they all ended up being something being in the wrong pin cavity at the two pcm connectors or a connector i had unplugged and once I plugged the male and female ends together again one of the pin cavities might be stretched open not making a good contact for the male side.

Just check and recheck i thought i had and a buddy who was helping me found a couple wires off by one cavity at the pcm connectors

98Camarod

iTrader: (43)

I did unplug all that stuff. I they went to the bcm and something else. I plugged them back together. Im not sure what it is though. Its a small black box that had its own holder. Did your car start and then die immediately as well?

The only thing i do know is that this blows.

98Camarod

iTrader: (43)

I have one extra plug that I'm assuming goes to TCS if installed. IIRC this same kind of **** happened to me when I originally swapped to a 2 bar setup. I had the 2 bar tune in and a 1 bar map and it wouldn't stay running. I knew that was the problem at the time.

What should the 3 bar read with koeo? Do you have to swap over to a different ect sensor for the swap? I'm at a loss here.

Cool28

iTrader: (2)

I didn't install the 3 bar but did do the 98 to 0411 PCM. At first it didn't work had to relink vats a few times before it took. Maybe try just a normal tune from 98 to 99+ file and see if that works.

98Camarod

iTrader: (43)

I disabled the VATS. It still won't run. I removed the fuel filters and cleaned them, there was a very small amount of trash in them. So I didn't think that would help when I saw them and I was right.

With KOEO the map reads 72.1kpa. I have 3 codes that I have no idea what the last two are.
P0452: Fuel Tank Pressure Sensor Circuit Low Voltage
P0748: Pressure Control Solenoid Circuit Electrical
P1637: Generator L-Terminal Circuit

Cool28

iTrader: (2)

P1637 I had that can just disable it. We use I think it is F terminal. The others I don't know did u copy over the 98 gauge info over to the new program?

Cool28

iTrader: (2)

http://www.ls2.com/boggs/a4/DTC%20P0748%205.7.htm

For the 2nd code. Seems something with trans

SSZ

I am pretty sure the P0452 code is an emissions related code. I dont think it has anything to do with the car not starting.

98Camarod

iTrader: (43)

I believe the codes are unrelated to it not staying running.

Cool28

iTrader: (2)

P0452. http://www.ls2.com/boggs/dtcs/DTC%20P0452.htm

98Camarod

iTrader: (43)

So I changed the map scaling to 305 and 6 offset and it runs. I need to find out the correct values for those 4 items.

98Camarod

iTrader: (43)

Anyone have a problem with the 98 tach actually working after the swap? Mine doesn't move at all. I have a RPM signal that is logged by hp tuners, so what gives?

97WS6SCharged

iTrader: (1)

Glad you got the car running. Only tach related thing I could come up with for that swap was in this thread. Might give it a shot.

https://ls1tech.com/forums/pcm-diagnostics-tuning/1624673-99-pcm-swap-tachometer-issue.html

98Camarod

iTrader: (43)

thanks, I posted a reply on his thread to get some more info